Which statement describes the process ID that is used to run OSPF on a router?
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A. B. C. D.B
B. It is locally significant and is used to identify an instance of the OSPF database.
The OSPF (Open Shortest Path First) routing protocol is used to distribute routing information within a single autonomous system (AS) in a hierarchical and scalable manner. OSPF routers in the same AS form a common OSPF routing domain, and each router runs the OSPF protocol independently.
The process ID is a locally significant identifier that is used to distinguish multiple OSPF processes running on the same router. A router can run multiple instances of OSPF, and each instance can have a different process ID. Each OSPF process maintains a separate link-state database, and the process ID is used to identify the instance of the OSPF database that is associated with the particular process.
The process ID is locally significant, meaning that it only applies to the router on which it is configured. It does not have to be the same throughout an area or globally unique, and it does not represent the AS number. The OSPF process ID is assigned by the network administrator and can be any value from 1 to 65,535.
In summary, the correct answer is B: It is locally significant and is used to identify an instance of the OSPF database.